In the mysql database, a number of tables disappeared. My email records show that at 6.29AM (PST) today, a transaction that involved several of the missing tables was conducted succesfully. I discovered the problem around 11AM (PST). The problem occured in that interval of time. In the interval, I did not access the server myself, so I suspect malicious action. Are there log files that I can use to I find out who connected to the database, and what they did ?